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Thread: ID help for nacaduba

  1. #1
    Join Date
    May 2017
    Location
    Singapore
    Posts
    81

    Default ID help for nacaduba

    Dear Dr Seow, please help with the ID for this nacaduba. Is it N. sanaya or N. pavana?

    Loh Mei Yee

  2. #2
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    6,060

    Default

    It is most likely Nacaduba hermus swatipa.


    There are quite anumber of 4line bliues recorded in Singapore which can be very difficult to ID.

    N. pavana ( & russelli) both have strongly developed dark striae within the bands. HW black spot with metallic scales.
    https://4.bp.blogspot.com/-PHJWYq36n...P_adult_01.jpg
    http://www.butterflycircle.com/check..._female_01.jpg
    N. russelli is very rare & have the submarginal spots large.


    N. sanaya elioti.
    No dark striae. HW black spot have no metallic scales.
    FW postdiscal band almost always dislocated at vein 6.
    HW submarginal spots & postdiscal band/spots usually well separated (variable).
    http://1.bp.blogspot.com/-XEY63bA0JP...aya+elioti.jpg
    http://www.butterflycircle.com/check...race%20tan.jpg


    N. sybperusia lysa. Dark striae absent.
    HW submarginal spots in space 4 & 5always very close to the postdiscal spots/band.
    HW black spot without metallic scales.
    FW postdiscal band usually not dislocated.
    http://3.bp.blogspot.com/-CCzm1ZlQsQ...rusia+lysa.jpg
    https://a4.pbase.com/g1/25/686825/2/...8.Pp1lTxSM.jpg


    Nacaduba hermus swatipa. Dark striae absent or nearly so.
    FW postdiscal band usually not dislocated.
    HW submarginal spots & postdiscal band in space 4 & 5 usually close but variable.
    HW black spot with a few metallic scales. Important ID feature.
    https://live.staticflickr.com/65535/...81d68726_c.jpg
    https://4.bp.blogspot.com/-EvYfAiVFY...0/DSC_1760.JPG


    N. pendleburyi. No pix.
    Dark striae absent.
    Submarginal spots narrow , so they & the postdiscal band are widely spaced.
    Male upperside FW with narrow black border expanding at apex.


    If you look carefully at the HW black spot, there are a few metallic scales.



    TL Seow: Cheers.
    Last edited by Psyche; 01-Aug-2021 at 06:17 PM.

  3. #3
    Join Date
    May 2017
    Location
    Singapore
    Posts
    81

    Default

    Thanks for the detailed explanation!
    Loh Mei Yee

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